I'd like to move ALL of the menu's generated by various plugins such as ACF, Layerslider, WPMU Dev etc, into a separate menu structure. In short, I'd prefer an item called "Plugin menu's" and below that have all the items relating to plugins. Sure, it'll add a third level to the structure, but that seems like a tiny problem imho.
I've googled but can't find anything on the subject.
The reasons I have for doing this, is A) to clean up the WP Admin considerably and B) to always know where plugin menu's are, especially when testing something new.